<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>小马视频－导航2</title>
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
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</head>
<body>

    <nav class="navbar navbar-default">
      <div class="container-fluid">
        <div class="navbar-header">
          <!-- 小屏幕显示设置 -->
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
            <span class="sr-only">响应布局设置</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <!-- 系统图标（左上角） -->
          <a class="navbar-brand" href="#"><img style="width:20px;" alt="Brand" src="brand.png"></a>
        </div>

        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
          <!-- 左边栏 -->
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">链接1 <span class="sr-only">(current)</span></a></li>
            <li><a href="#">链接2</a></li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">选择框 <span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#">选择1</a></li>
                <li><a href="#">选择2</a></li>
                <li><a href="#">选择3</a></li>
                <li role="separator" class="divider"></li>
                <li><a href="#">选择4</a></li>
                <li role="separator" class="divider"></li>
                <li><a href="#">选择5</a></li>
              </ul>
            </li>
          </ul>
            
          <!-- 检索框 -->
          <form class="navbar-form navbar-left" role="search">
            <div class="form-group">
              <input type="text" class="form-control" placeholder="关键字">
            </div>
            <button type="submit" class="btn btn-default">检索</button>
          </form>
            
          <!-- 右边栏 -->
          <ul class="nav navbar-nav navbar-right">
            <li><a href="#">右链接</a></li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">右选择框 <span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#">选择1</a></li>
                <li><a href="#">选择2</a></li>
                <li><a href="#">选择3</a></li>
                <li role="separator" class="divider"></li>
                <li><a href="#">选择4</a></li>
              </ul>
            </li>
          </ul>
        </div><!-- /.navbar-collapse -->
      </div><!-- /.container-fluid -->
    </nav>
    
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</body>
</html>
